In this image released Sunday, May 15, 2011, by NBC News former House Speaker Newt Gingrich is interviewed on NBC's "Meet the Press" in Washington Sunday. Gingrich said he is very serious about seeking the U.S. presidency, but laughed off any suggestion that he could end up with the Republican Party's vice presidential nomination next year. (AP Photo/NBC News, William B. Plowman) The Associated PressWASHINGTON (AP) — Republican presidential contender Newt Gingrich wants to increase federal spending on Alzheimer's research and says the money would be a wise investment in taxpayer dollars to eliminate a disease that is on pace to cost the government some $20 trillion between now and 2015.Gingrich, the top Republican in the House during the 1990s, said Monday that he wants researchers to tell him how much money they can use to cure Alzheimer's. The former House speaker from Georgia says the United States could sell bonds as investments in Alzheimer's research that would let federal research dollars be taken out of the political budget process.Gingrich says the spending — with a bottom line undefined — could ultimately shave the budget.